What the heck is this thing? Well, it's Thing One, clearly. Fresh from the Antarctic, it's the Thing One Adult Costume, so it stands to reason that it is a Thing One Costume. It's the world's premiere kite-flying creature that comes in a box!

If you like cats, if you like hats, if you like the combination of the two things, then the Thing One Adult Costume is the pinnacle of Seuss-ian Hallowen outfit design. It doesn't get much more thingy than this. The outfit comes with a shirt (emblazoned with the number of Thing that it is), along with matching pants, and a shocking blue fright wig.

The Thing One Adult Costume is of one of the infamous Things from the classic kid's book The Cat in the Hat!